.image-container {
    width: 100vw;
    height: 100vw;
    background-image: url('https://images.wallpaperscraft.com/image/single/cube_dark_texture_119956_2048x1152.jpg');
    background-size: cover;
    background-position: center;
    transition: background-image 0.3s ease-in-out;
}

.image-container:hover {
    background-image: url('https://images.wallpaperscraft.com/image/single/car_concept_threedimensional_133624_3840x2400.jpg');
}